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Issue:ISSN 2095-1353
           CN 11-6020/Q
Director:Chinese Academy of Sciences
Sponsored by:Chinese Society of Entomological;institute of zoology, chinese academy of sciences;
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Your Position :Home->Past Journals Catalog->2017年54 No.2

Bionomics of Assara inouei Yanmanaka (Lepidoptera: Pyralidae)
Author of the article:HE Chao1** SHEN Deng-Rong1 YIN Li-Hong2 LI Xi-Liang1 YUAN Sheng-Yong1 TIAN Xue-Jun1
Author's Workplace:1. College of Life Science and Technology, Honghe University, Crop Cultivation and Safety Control Key Laboratory of Yunnan Province, Mengzi 661100, China; 2. College of Forestry, Southwest Forestry University, Kunming 650216, China
Key Words:Assara inouei, biologigical characteristics, developmental period, survival rate, fecundity, sex ratio
Abstract:

[Objectives]  To clarify the growth, development and reproduction of Assara inouei Yanmanaka, an important pest of pomegranate fruits in Yunnan province. [Methods]  The developmental duration, survival rate, pupal weight, sex ratio, longevity, and fecundity, of A. inouei were systematically observed under laboratory conditions. [Results]  The developmental duration of the eggs, larvae, pupae, and adults, of A. inouei at 25℃, a relative humidity of 70% and a photoperiod of 15L∶9D, was 6.58, 18.64, 6.21 and 13.81 d, respectively, and that of a complete generation was 35.93 d. The hatching, larval survival, pupation, and emergence rates were 44.57%, 64.02%, 86.72% and 96.48%, respectively, and the generational survival rate was 32.49%. Female and male pupal weights were 16.85 mg and 13.36 mg, respectively. Female and male pupae had a sex ratio of 1.37∶1. Peak pupal eclosion was 6 to 8 d after pupation. The duration of the pre-oviposition and oviposition periods were 1.94 d and 6.84 d, respectively. The average longevity of female and male adults was 14.88 d and 12.74 d, respectively. Under different female: male sex ratios, the average number of eggs laid per female ranged from 31.24 to 118.34. The highest number of eggs laid per female was recorded at a sex ratio of 6∶4. The average number of eggs laid per female at 25℃ was significantly higher than at 22℃, and the average number of eggs laid per female at a relative humidity of 70% was significantly higher than at a relative humidity of 50%. [Conclusion]  Sex ratio, temperature and humidity have a significant impact on the fecundity of female A. inouei. These results provide basic information for the artificial rearing, prevention, and control of this pest.

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